Gasoline purifier



C. E. PEARSON GASOLINE PURIFIER July 3, 1928.

Filed May 16, 1927 2 Sheets-Sheet July 3, 1928.

C. E. PEARSON GASOLINE PURIFIER Filed May 16, 1927 2 Sheets-Sheet gwwntox Carl E. Pearson Patented July 3, 1928.

UNITED STATES PATENT FFECE.

CARL E. PEARSON, 0F CAMDEN, NEW JERSEY, ASSIGNOR TO MOTOR REQUIREMENTS CORPORATION, OF CAMDEN, NEW JERSEY, A CORPORATION OF NEXV JERSEY.

GASOLINE PURIEIER.-

Application filed May 16,

sihility of the enclosedparts, and low manufacturing cost. 7

embodiment of the invention is illustrated in the accompanying drawings, in which:

Figure 1 is a front elevation of the puritier.

Figure 2 is a vertical sectional view.

Figure 3" is a View partly in elevation and partly in vertical section of the filtering elemeat.

Figure 4 isa plan view of the purifier and its supporting means,

Figure 5 is asection on the line 5--5 of Figure 2.

Figure 6 is a plan view of the distributi'ng. rings Figure '1 is a view showing the purifier as applied in use between the fuel tank and the vacuum tank. of an automobile.

The purifier includes a closed casing indicated generally at 1 and which is composedv of an upper section 2 and a lower section 3-,- these beingv securedtogether by bolted flange connections 4. The section 2 iscylindrical and is formed with a top plate 5 and tl'l6* S8Chl'OIl 3 is substantially cupshaped with its bottom preferably rounded. The casing 1i encloses a: filtering unit which consists of an inner screen- 6- of chamois and an outer screen 7 of fine wire mesh which surrounds and is spaced from the ch'a'rnois 6; The screen 6- is in the form of a continuous sleeve or envelope which is vertically arrangedi and which is secured an enclosed re-enforcina frame 8 by which the collapse of the cha-mois under suction influence is avoided, The upper portion of the chamois sleeve (5'. being that portion which lies within the casing section 2 is prefierably cylindrical and the lower 1927. Serial No. 191,603.

portion of said sleeve, being that portion which lies within the casing section 3 is preferably fru-sto-conical, the re-enforcing frame 8 being shaped to conform. The screen 7 surrounds the frusto-conical part of the chamois sleeve 6 and at its upper end is attached to a cylindrical bafile 9 which surrounds the cylindrical part of the chamois sleeve and is suitably spaced from the same. The casing section 2 is formed at one side with an inlet nipple 10 and the baffle 9 carries a distributing ring 11 which is inclined downward from a point adjacent the lower side of said inlet nipple and which extends across the space between the bafile and the wall of the casing section 2 as shown in Figure 2, the ring 11, the baflie and the casing section 2 providing an annular inlet chamber 12. The upper marginal portions of the baffle 9, the sleeve 6 and the frame 8 fit within a ring 13 of channel cross section which is centered by an annular shoulder 14 extending between the cylindrical wall of the casing 2 and the top plate 5.- At its lower end the filtering unit is provided with a head 15 having an annular shoulder 16 which fits within the lower end of the chamois sleeve and the frame 8- and centers the same. The head 15 has a part which projects below said sleeve and frame as a support and to which the lower marginal portion of the screen 7 is suitably secured.

The unit as a whole is supported within the casing 1 by a hollow central stem 17,

the lower end of which has threaded en gagement in a central opening of the head if) and carries a nut 18 and the upper end of which projects through an opening in the top plate 5 and carries a securing nut 19. By means of the nut 19 the stem 17 is utilized to hold the filtering: unit with its up per end, as provided by the ring 13. in air sealed engagement with the top plate 5. The stem 17 provides an outlet conduit for the filtered gasoline and is formed near its vapor end with openinos 20 through which the gasoline flows from the interior of the chamois sleeve.

The casing section 3 is provided at its bottom with a drain opening which is normally closed by a plug 21. This plug projects into the lower end of the stem 17 and also closes openings 22 formed at the lower end of said stem and through which any inipurities accumulating on the head 15 may be flushed upon the removal of the plug 20.

The distributing plate 11 is formed with slots 23 arranged in a circle throughout the extent of said plate. In order that the flow of gasoline through the plate may be equalized at points remoter from the inlet nipple 10 with the flow at points nearer said inlet nipple the slots 23 aremade of gradually increasing length as shown in Figure 6 toward the side of the plate 11 which is remote from the inlet nipple 10.

The filter may be supported by a suitable bracket 24 from the top of the vacuum tank V.

Referring to Figure 7, A is the pipe which leads from the gasoline tank to the inlet nipple 10, B is the pipe which leads from the outlet conduit of the filter, that is to say, the stem 17, to the vacuum tank and C is the pipe which leads from the vacuum tank to the motor.

The function of the balfie 9 is to prevent the gasoline as it enters the casing 1 from directly impinging upon the filtering areas and to cause the gasoline to flow downward before it has access to the filter areas. As a result of such downward flow momentum is given to the solid particles which facilitates their deposit in the space or pocket 25 of the casing section 3 below the filtering unit. The provision of the baffle 9, however, does not necessitate any reduction in the effective area of the chamois sleeve 6. As soon as the gasoline passes below the battle 9 the entire surface of said chamois sleeve is accessible, the part thereof which lies within the baffle as well as the part which lies below the bafile. Thus the chamois sleeve is substantially completely submerged in the gasoline and a relatively large filtering area is presented which at all points of its extent is uniformly subject to the suction influence, while the space below the filtering and screening unit is sufiiciently large to provide for the accumulation of any water that may be carried over into the gasoline without the danger of such water being carried through the chamois sleeve. The suction influence being uniformly distributed over the whole of the relatively large area of the chamois sleeve it follows that such influence at any single point of the sleeve is relatively small so as to minimize interference with the descent of the heavier solid particles to the bottom of the casing.

Having fully described my invention, I claim:

1. In a gasoline purifier, a casing, a filter ing element therein including a chamois sleeve of annular horizontal section, a verticnl annular bufile surrouiul ng and spaced from the upper portion of the sleeve, the casing having an inlet adjacent said baflie, an outlet leading from the interior of the sleeve, and a perforated distributing ring arranged below the inlet and extending across the space between the battle and the casing, the perforations of said ring increasing in area away from said inlet.

2. In a gasoline purifier, a casing, a filtering element therein including a frame, a chamois sleeve of annular horizontal section fitted upon said frame, a supporting head at the lower end of said frame, a hollow stem extending through the interior of said sleeve with its lower end connected to said head and its upper end projecting through the top of the casing, a nut on the promoting upper end of said stem to support the same and hold the filtering unit with its upper end lying against the upper end of the casing, the stem serving as an outlet conduit and having openings through which the gasoline mayfiow from the interior of the casing, and a gasoline inlet nipple formed in a wall of the casing.

3. In a gasoline purifier, a casing, a filtering element therein including a frame, a chamois sleeve of annular cross section fitted upon the frame, a lower head supporting the frame, a hollow stem extending through the head, the sleeve and the casing, said stem serving as anoutlet conduit and communicating with the interior of the sleeve by upper openings and lower openings, agasoline inlet nipple formed in a wall of the casing, and a drain plug fitted into the lower end of the casing and extending into said stem normally to close the lower openings.

4. In a gasoline purifier, a casing having a gasoline inlet nipple, a filtering unit within the casing including a filtering element of annular horizontal section, a closure for the lower end of said element, an annular baffle adjacent said nipple and in spaced surrounding relation to the upper portion of said element, an outlet conduit leading from the interior of said element, said conduit being secured to said closure and means for securely holding said element in sealed engagement with the top of the casing.

5. In a gasoline purifier, a casing having a gasoline inlet nipple, a filtering unit within the casing including a filtering element of annular horizontal section and an annular baffle adjacent said nipple and in spaced surrounding relation to the upper portion of said element, an inclined perforated distributing ring below said nipple and extending,, across the space between said baflie and said casing, and an out-let conduit leading from the interior of said element, the perforations of said ring increasing in area away from said inlet.

6. In a. gasoline purifier, a casing having an upper and lower part removably secured said filtering element and an outlet conduit together, an inlet nipple leadin to said extending through said casing and filtering upper part, a filtering element 0 substanelement and communicating with the inte- 10 tially circular cross section in said upper rior of said element.

part and formed with converging sides in In testimony whereof I hereby afiix my said lower part, a bafile in said upper part signature.

interposed between said inlet nipple and CARL E. PEARSON. 

